US3576118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: AL Hansen Manufacturing Co
•
Filing: 1969-10-24
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Granted: 1971-04-27
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Expires: 1989-10-24
Abstract
Abstract A pan-shaped housing with a lock bolt slidably guided at the back wall thereof. The lock bolt comprises a hollow metal tube having longitudinal corners with a slight radius, and a plastic insert with an outer head portion presenting an inclined cam surface for cooperation with a keeper plate. Latching and locking members are pivotally mounted in the housing, and have plate portions which extend across and normally close the front of the housing. The latching member has a lever portion which extends through the housing back wall and projects into the plastic insert of the lock bolt for effecting retracting movement of the bolt upon pivoting of the latching member. The locking member has selectively operable lock means for preventing pivoting of the latching member and corresponding retracting movement of the bolt.
Inventors
- 👤 Robert E Doerrfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:39
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/14; E05C1/145; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0994; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5491; Y10T70/5611; Y10T70/5757; Y10T70/5761
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
A door lock comprising a pan-shaped housing with back and sidewalls, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, a spring in said guide member to bias said bolt into a projected latching position, a latching member pivotally mounted in said housing and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring, and a locking member pivotally mounted in said housing and having locking means for selectively holding said latching and locking members in a locked position against any pivotal movement, each of said latching and locking members having a plate portion at opposite ends of said housing adjacent the outer ends of said sidewalls and which together cover the front face of said housing.
Claim 2
Dependent Claim
150 words
A door lock comprising a pan-shaped housing with back and sidewalls, said back wall having a slot therein, a guide member supported on the outside surface of said back wall and open to said slot, a bolt slidable in said guide member, a spring in said guide member to bias said bolt into a projected latching position, a latching member pivotally mounted in said housing and having a lever portion with one end projecting through said slot for retracting said bolt against the force of said spring, and a locking member pivotally mounted in said housing and having locking means for selectively holding said latching and locking members in a locked position against any pivotal movement, each of said latching and locking members having a plate portion at opposite ends of said housing adjacent the outer ends of said sidewalls and which together cover the front face of said housing.
Claim 3
Dependent Claim
47 words
A door lock as defined in claim 1, wherein said locking means includes a key-actuable cylinder lock mounted in an opening in said plate portion of said locking member and having an inwardly extending rotatable stud, and a locking arm secured to the end of said stud.
Claim 4
Dependent Claim
48 words
A door lock as defined in claim 1, further comprising stop means to prevent said plate portion of said locking member from swinging outwardly beyond the outer edges of said sidewalls and spring means to bias said platE portion of said locking member away from said back wall.
Claim 5
Dependent Claim
42 words
A door lock as defined in claim 1, wherein said plate portions of said locking and latching members have conforming free ends and normally lie in the same plane to provide a substantially flush continuous surface across the front of said housing.
Claim 6
Dependent Claim
84 words
A door lock as defined in claim 4, wherein the free end of said plate portion of said locking member includes an outer lip that is offset inwardly and is normally in abutting engagement with the under surface of the free end of said plate portion of said latching member, and said locking means includes a supporting section which engages the under surface of said outer lip when said locking means is moved to hold said latching and locking members in a locked position.
Claim 7
Dependent Claim
81 words
A door lock as defined in claim 1, wherein said bolt operating on said lever portion biases said plate portion of said latching member pivotally toward said housing, wherein said lever portion is engageable with the adjacent edge of said slot to prevent said plate portion of said latching member from swinging inwardly of said housing, and including a cover member carried by said latching member and engageable with the inside surface of said back wall to cover substantially said slot.
Claim 8
Dependent Claim
50 words
A door lock as defined in claim 6, wherein said locking means includes a locking arm engageable with the outer surface of said cover member to hold the latter against said back wall when said locking means is moved to hold said latching and locking members in a locked position.
Claim 9
Dependent Claim
62 words
A door lock as defined in claim 1, wherein said bolt comprises a hollow steel tube having an opening formed in one side thereof aligned with said back wall slot, and a plastic insert secured in said tube with a cam surface projecting outwardly of said tube and having a recess therein aligned with said tube opening for receiving said lever portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |